Organizations and regulators across Europe, including Germany, have started looking into the use of Carrier IQ's tracking software, to ensure that mobile phone vendors and operators are not violating users' privacy.

The Bavarian State Office for Data Protection has sent a letter to Apple questioning the company about its use of Carrier IQ's software.

The use of Carrier IQ's software caused a furor after security researcher Trevor Eckhart last month published a report accusing the company of installing malware on a number of different smartphones, where it apparently allowed operators and phone vendors to keep track of key presses, browsing history, SMS logs, and location data without the users knowledge.